Marking Classified National Security Information

1 Marking Classified National Security Information AS REQUIRED BY EXECUTIVE ORDER 13526, Classified National Security Information DECEMBER 29, 2009, AND I 32 CFR PART 2001, ISOO IMPLEMENTING DIRECTIVE JUNE 25, 2010 DECEMBER 2010 Revision 4, January 2018 I This document is UNCLASSIFIED. Any classification markings are for training use only. -- This page left blank --TABLE OF CONTENTS -i-Introduction ii SECTION 1: Required Elements of Marking 1 Portion Marking 3 Overall Classification Marking 7 Classification Authority Block 9 SECTION 2: Derivative Classification Markings 13 Examples 14 Declassification Instruction Missing from Source Document 16 Use of 25X1 through 25X9 Exemptions 17 Security Classification Guides 18 Classification by Compilation 20 SECTION 3.

2 Marking Examples 23 E- Mail 24 Excel Spreadsheets 28 Working Papers 29 Databases 30 Classification Markings in the Electronic Environment 30 SECTION 4: Legacy Markings 31 SECTION 5: Additional or Special Markings 35 Classification Extensions 36 Foreign Government Information 37 Commingling RD/FRD with NSI 38 Transmittal Documents 39 Options for Marking Complex Slides 41 Declassified Documents 43 Marking of Electronic Storage Equipment 44 SECTION 6: Quick Reference 45 INTRODUCTION -ii -Executive Order ( ) 13526 and its implementing directive, 32 CFR Part 2001, prescribe a uniform Security classification system.

3 This system requires that standard markings be applied to Classified Information . Except in extraordinary circumstances, or as approved by the Director of the Information Security Oversight Office (ISOO), the Marking of Classified Information shall not deviate from the prescribed formats. Markings shall be uniformly and conspicuously applied to leave no doubt about the Classified status of the Information , the level of protection required, and the duration of classification. Since a booklet of this size cannot illustrate every conceivable situation, please refer to the implementing directive, other ISOO issuances, and any instructions issued by your organization for further clarification.

4 Consult your Security manager if you have any questions. This booklet is unclassified, and as it is in the public domain, it may be reproduced without permission. All classification markings used are for illustration purposes only. All previous booklets and the guidance contained in them are rescinded. Reminders Original classification is the initial determination that Information required, in the interest of the National Security , protection against unauthorized disclosure. Only individuals specifically authorized in writing by the President, the agency Head, or the Senior agency Official may classify documents originally.

5 OCAs must receive training on their responsibilities annually. Derivative classification is the incorporating, paraphrasing, restating, or generating in new form Information that is already Classified , and Marking the newly developed material consistent with the classification markings that apply to the source document. Only individuals with the appropriate Security clearance, who are required by their work to restate Classified source Information , may derivatively classify Information . Derivative classifiers are required to receive training at least once every two years.

6 Markings other than Top Secret, Secret, and Confidential shall not be used to identify Classified National Security Information . Information shall not be Classified for any reason unrelated to the protection of the National Security . Classifiers and authorized holders are responsible for ensuring that Information is appropriately Classified and properly marked. Individuals who believe that Information in their possession is inappropriately Classified , or inappropriately unclassified, are expected to bring their concerns to the attention of responsible officials.

7 Section 1: Required Elements of Marking -1-Section 1: Required Elements of Marking -2-Required markings under 13526 include: Portion markings; Overall classification markings; and Classification authority block consisting of: A Classified By line to include the identity, by name andposition, or by personal identifier of the classifier, and if not otherwise evident, the agency and office of origin. The Reason for classification as provided in section of the Order for originally Classified documents, or Derived From for derivatively Classified documents.

8 A Declassify On line which shall indicate one of the following durations of classification: A date or event for declassification that corresponds to the lapse of the Information s National Security sensitivity, which is equal to or less than 10 years from the date of the original decision. A date not to exceed 25 years from the date of the document creation. If the Classified Information should clearly and demonstrably be expected to reveal the identity of a confidential human source or a human intelligence source, no date or event shall be annotated and the Marking 50X1-HUM shall be used.

9 If the Classified Information should clearly and demonstrably be expected to reveal key design concepts of weapons of mass destruction, no date or event shall be annotated and the Marking 50X2-WMD shall be used. 25X1 through 25X9, with a date or event (as approved by ISCAP) Note: Refer to ISOO Notice 2018-01 if using an event for a declassification instruction. Section 1: Required Elements of Marking I * -3-Portion Marking What constitutes a portion? (This list is not all inclusive) Title Subject Paragraphs/sub-paragraphs Bullet points/sub-bullet points Graphics (maps, photos, pictures, etc.)

10 Ta b l e s Charts Why do we portion mark? Portion markings identify the Information that must be protected and the level of protection that is required. Documents that are not portion marked shall not be used as source documents for derivatively Classified documents. Portion Marking is a requirement on allclassified documents; originally Classified and derivatively Classified to include e-mails. This also applies to all unclassified documents (including e-mails) that reside on a Classified system. NOTE: Portion Marking waivers may be requested by an agency head or senior agency official.